If two painters can complete two rooms riddle

 

If two painters can complete two rooms riddle

If two painters can complete two rooms riddle

 

Riddle me this:

If two painters can complete two rooms

If two painters can complete two rooms in two hours, how many painters would it take to do 18 rooms in 6 hours?

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ANSWER

It would take six painters. Two painters can complete two rooms in 2 hours, so four man hours for two rooms which is two man hours per room.
So 18 rooms requires 2 X18 = 36 man hours.
36 man hours for six hours means 36 / 6 = 6 men are working 6 hours to paint 18 rooms.